FIFA referees from 1970 to 1981
Clive Thomas (born 22 June 1936) is a Welsh former football referee, who operated in the English Football League and for FIFA during his career. He came from Treorchy in the Rhondda Valley.In 1984 he published his autobiography “By the Book”.
World Cup 1974 (Germany): Poland - Argentina 3-2, Brazil – East Germany 1-0
World Cup 1978 (Argentina): Brazil – Sweden 1-1
UEFA Euro 1976 (Yugoslavia): Czechoslovakia – Netherlands 3-1
Source : Wikipedia